Juno Temple stars as an American student visiting Chile and losing her grip on reality as a result of insomnia.

The highly-strung Alicia (Temple) arrives in Santiago to stay with her cousin Sara (Emily Browning), who is spending a year at university there. No sooner has she arrived than she’s bundled into a car with Sara’s boyfriend Agustin (Agustin Silva), his studious sister Barbara (Catalina Sandino Moreno), and their obnoxious American friend Brink (Michael Cera) for a long road-trip to an island off the Chilean coast where Agustin’s family has a holiday home. And Sara stays behind, pleading an unexpected college exam that she has to take. Alicia’s confusion, linguistic incompetence, clumsiness and insomnia see her rub everyone up the wrong way. Feeling persecuted and ever more insomniac Alicia starts to hallucinate phone conversations with Sara, imagine disapproving stares from Barbara, and even become morbidly afraid of an amorous dog. When Sara finally arrives she finds Alicia nearly unspooling completely.

Magic Magic isn’t really a horror film, but it does have elements of ‘social horror’ as Stephen King dubbed it. Early on Barbara deviously baits Alicia into patronising the marginalised of Chile, and from that moment we suspect Barbara, but are also terrified on Alicia’s behalf that she’s going to be victimised by these people as a sacrificial ugly American paying for the sins of the CIA. That things don’t work out quite so predictably is to the good. Instead Alicia’s insomnia sees her start to lose her grip on reality, and, on a more mundane and relatable level, make poor choices that compound her existing difficulties. The irony of course is that this island is beautifully photographed by Christopher Doyle and Glenn Kaplan as a paradise, but Alicia can only see its geographic isolation and its related threatening strangeness.

Temple is less over-exposed than in Killer Joe, but reprises some elements of that naïf performance. Michael Cera, however, reprises elements of his This is the End cameo to startling effect. It turns out that Cera can be skin-crawlingly creepy and his cruel capricious sexually predatory Brink is a very memorable villain that renders George Michael Bluth a distant memory. However, despite the committed performances and the patient descent into insomniac madness writer/director Sebastian Silva doesn’t really seem to know where all this is headed. A climatic sequence seems to fulfil many of the social horror elements hinted at earlier, but then peters out into an ending that may have been intended as enigmatic but just feels inconsequential. Cera, the executive producer, obviously sniffed a good opportunity to shake up his screen persona, but what is the film’s wider purpose?

Magic Magic is eminently watchable; especially if you’ve ever been thrown among strangers and had to awkwardly sink or swim socially, or lain awake for hour after frustrated hour; but it’s not essential viewing.

As the traditional complement to last week’s Top 10 Films, here are the Top Performances of 2012. The Golden Globes categories obviously inspired the absurdist split into drama and comedy of Best Supporting Actor. The refusal to isolate single winners is deliberate; regard the highlighted names as the top of the class, and the runners up being right behind them, and the also placed just behind them. They’re all superb performances.

Best Supporting Actor (Drama)

John Hawkes (Martha Marcy May Marlene) His cult leader is as scary and charismatic as his Teardrop in Winter’s Bone, you believe this man could hold Martha in his thrall even as initial love-bombing degenerates into sexual abuse and criminal adventures.

Viggo Mortensen (A Dangerous Method, On the Road) His droll Freud is charismatic and delivers great put-downs but is deeply ambiguous; did he deliberately corrupt Jung? As genteel junky William Burroughs he was unexpectedly warm and sane.

Michael Fassbender (Prometheus, Haywire) His very precise turn as the dishonest android enlivened Prometheus, while his Haywire killer was very dashing.

Also Placed:

Sam Neill (The Hunter) Neill’s gravitas and underplayed emotional torment gave a weight to his dialogue scenes with Dafoe that underpinned Dafoe in the wilderness.

Trystan Gravelle (Stella Days) His teacher inspired Martin Sheen’s priest to defiance, but he also played the attraction to his landlady with great subtlety.

Best Supporting Actor (Comedy)

Ezra Miller (The Perks of Being a Wallflower) Miller, as flamboyant senior Patrick, displays startling range in portraying charismatic rebel after his troubled loner in We Need to Talk About Kevin. His turn is an exuberant joy that tramples clichés of gay characters in high-school movies.

Edward Norton (Moonrise Kingdom) The Greatest Actor of His Generation (TM) is actually wonderful here as the kindly earnest scoutmaster unable to control his troops.

Best Supporting Actress

Sarah Paulson (Martha Marcy May Marlene) She excellently layered Lucy’s relief at getting her missing sister Martha back, with guilt at perhaps having driven her away originally, and a mingled desperation and despair over the prospects of healing her psychic scars.

Sophie Nelisse (Monsieur Lazhar) As Alice, the traumatised but kind girl who most appreciates what M. Lazhar is trying to do for the class, this Quebecois Dakota Fanning gives a stunningly mature performance based on unspoken grief.

Shaleine Woodley (The Descendants) She displayed considerable spark as the troubled 17 year old banished to boarding school, who’s surprisingly effective at buttressing her father’s parenting of her younger sister even as she tells him home truths.

Anne Hathaway (The Dark Knight Rises) Hathaway essayed a great languorous voice, a wonderful slinky physicality, and a good chemistry with Batman, as well equal viciousness with quips and kicks, but her delightful presence was sorely underused.

Runners Up:

Helene Florent (Cafe de Flore) Her abandoned wife sinking into depression at the loss of her life-long partner gives the film its emotional weight.

Ellen Page (To Rome with Love) Page’s madly attractive actress gets a huge build-up from Greta Gerwig and lives up to it with gloriously shallow sophistication.

Megalyn Echikunwoke (Damsels in Distress) Echikunwoke madly milks her recurring line about ‘playboy operators’ and has an amazing character moment.

Kristin Scott Thomas (Salmon Fishing in the Yemen) Her terrifying Press Secretary; reshuffling the P.M.’s Cabinet for him, verbally abusing her own children; stole the film.

Mae Whitman (The Perks of Being a Wallflower) Whitman is hilariously narcissistic and garrulous as she dominates her unfortunate boyfriend.

Vanessa Redgrave (Coriolanus) A 75 year old assaults Jimmy Nesbitt and you feel concerned for him – Redgrave oft conjures up that ferocity as Fiennes’ mother.

Best Actress

Elizabeth Olsen (Martha Marcy May Marlene, Liberal Arts) Olsen’s debut as cult member Martha was startlingly assured – naive victim and spiteful malefactor – and her thoughtful and witty Zibby was a comedic turn of great charm and depth.

Jennifer Lawrence (The Hunger Games, Silver Linings Playbook) Imperious as Katniss: a great action heroine who combined a will of steel with being a surrogate mother. Her depressed Tiffany was quicksilver magic, flirty to angry in mere seconds.

Runners Up:

Keira Knightley (A Dangerous Method, Anna Karenina) Knightley excelled at Anna’s early empathy, but she was startlingly alien as the hysteric Sabina who recovers to a nuanced fragility.

Emma Watson (The Perks of Being a Wallflower) Watson is luminous as the sardonic senior who makes it her project to transform an isolated freshman into a fellow RockyHorror performer.

Also Placed:

Emma Stone (The Amazing Spider-Man) Stone’s witty and very determined Gwen Stacy makes you realise how poorly used Dallas Bryce Howard was and how flat out poor Kirsten Dunst was.

Deborah Mailman (The Sapphires) Gail, the sister with an inflated opinion of herself and a sharp mouth, is a meaty part with a lot of zinging put-downs.

Lola Creton (Goodbye First Love) Creton’s arc from teenage suicidal despair to apparent and actual contentment was utterly convincing, especially in her unease around her lost love.

Best Actor

Michael Fassbender (Shame) His remarkably raw performance made us sympathise with a sex-addict scared of being rumbled at work, but that panicked despair on his face had a flipside, the predatory smile when picking up women. Balancing both was sublime.

Runners Up:

Woody Harrelson (Rampart) This tour-de-force made us care for a repellent character. Yes, he was a jerk and a dirty cop, but desired to do the right thing as he saw it.

Willem Dafoe (The Hunter) Dafoe’s physical presence as he stalked the Tasmanian bush was equalled by his emotional integration into the family he lodged with.

Mohamed Said Fellag (Monsiuer Lazhar) Fellag’s strict but loving teacher knows how to help the class recover from trauma and, driven by his loss, defies orders not to.

Also Placed:

Chris O’Dowd (The Sapphires) His drunken Irish soul man lifts the movie to comic heights it wouldn’t have hit, especially in his fractious relationship with Gail.

Muhammet Uzuner (Once Upon a Time in Anatolia) Dr Cemal was a creation of immense humanity, his Stoic voiceover while the camera observed waving grass at night mesmerising.

Taner Birsel (Once Upon a Time in Anatolia) Prosecutor Nusret was splendidly subtle, a man of equal empathy and diplomacy who slowly crumbles when deconstructed by Dr Cemal.

Honourable Mention:

Ralph Fiennes (Coriolanus) Fiennes was fierce as a man of exceptional courage and nobility who will not humble himself for ‘appearances’.

Christoph Waltz (Carnage) His compulsive starting of fires, followed by excusing himself to shout “Hello, Walter!” into his phone, was joyous.

1970s legend William Friedkin teams up with controversial Tony-winning playwright Tracy Letts for a disturbing slice of what might be usefully dubbed Kentucky Fried Noir.

Small-time drug dealer Chris (Emile Hirsch) is in debt after his estranged mother plunders his cocaine stash. He suggests to his father Anselm (Thomas Haden Church) that they murder her for the insurance money which will be paid to Chris’ sister Dottie (Juno Temple), a plan supported by his father’s new wife Sharla (Gina Gershon). Bent Dallas cop Killer Joe (Matthew McConaughey) doubles as a hit-man, but with no money for a deposit he agrees to an unusual retainer – Dottie. But as Joe and Dottie grow close the murderous insurance scam unravels nastily and unpredictably…

It’s no exaggeration to dub this McConaughey’s Drive. From the exaggerated sound of his clicking lighter (not unlike Ryan Goslin’s creaking driving gloves), to his toothpick, to his insistence on rules and calm demeanour while making and executing threats of extreme violence, to his growing attachment to a girl softening his cold exterior, to the superhero outfit (here a fetishised hat, gun and badge), Joe has eerie similarities to Driver and McConaughey gives a revelatory performance. Friedkin may borrow from Refn’s bag of tricks but this is not equally virtuoso film-making. If you’ve read Easy Riders, Raging Bulls you won’t lament Friedkin’s precipitous decline after The French Connection and The Exorcist. His episodes of CSI: LV have probably been viewed by more people than most of his movies since 1973, with the possible exception of the tedious Rules of Engagement.

Killer Joe is all over the shop tonally. There is a piece of visual comedy involving a suit which is hilarious, which, like Joe replying “I like Digger” to the question why he doesn’t arrest the gangster Digger, and Chris being beaten up by Digger’s goons who then inform him “He really likes you”, belongs in another film. You don’t care for a second what happens to Hirsch which makes you realise how Joe’s query of Anselm; “Were you aware of this?” “I’m never aware”; exemplifies the unnerving stupidity of the characters. Friedkin also does for unnecessary female nudity here what he did for unnecessary male nudity in To Live and Die in LA. Temple bares all several times for no very clear reason, and Gershon flashes repeatedly, but the fact that Dottie is clearly not the full shilling makes a scene where Joe makes her strip naked incredibly disturbing. And that’s before we get to the unbelievable use of a “K fry C” chicken wing as part of the intensely theatrical climax in which persistent interrogation cuts thru lies – a bravura sequence that almost redeems previous queasy scenes.

This is a tough watch, and it’s debatable whether it’s really worth the struggle, but McConaughey’s performance erases all his disastrous rom-coms. He’s that good.